Rasna

Names and identification

Language	Name
English	Rasna
Latin/Botanical	Pluchea lanceolata (DC.) Oliv. & Hiern / Alpinia galanga (L.) Willd.

Key Phytochemical Constituents

• Pluchine (Pluchea alkaloid)
• Quercetin
• Isorhamnetin
• Taraxasterol B
• Betaine hydrochloride
• Galangin (Alpinia)
• 1’-Acetoxychavicol acetate (ACA, Alpinia)
• Beta-sitosterol

How does it work?

• Anti-inflammatory: Pluchine and quercetin inhibit COX-2 and 5-LOX enzymes, reducing prostaglandin and leukotriene synthesis; ACA (from Alpinia) suppresses NF-kB activation
• Anti-arthritic: Triterpenoids and flavonoids reduce synovial inflammation and cartilage degradation by inhibiting MMP-3 and MMP-9
• Immunomodulatory: Taraxasterol and quercetin modulate macrophage cytokine production, balancing Th1/Th2 immune responses

Which traditional uses are supported by research?

• Anti-rheumatic and anti-arthritic use (Amavata treatment) validated by reduction of inflammation markers and joint edema in animal models
• Analgesic use (Vedana-sthapana) confirmed through significant pain reduction in hot plate and tail flick assays
• Immunomodulatory (Rasayana) activity validated by enhancement of phagocytic function and antibody response

What do recent clinical trials show?

• Srivastava P, Shanker K 2012. Pluchea lanceolata (Rasana): Chemical and biological potential of Rasayana herb used in traditional system of medicine. Fitoterapia. PMID 22877846 · doi:10.1016/j.fitote.2012.07.008
  Documented triterpenoids, sterols, flavonoids and lactones as prominent constituents; validated anti-inflammatory, analgesic, and immunomodulatory activities.
• Kaushik D, Yadav J, Kaushik P and others 2011. Current pharmacological and phytochemical studies of the plant Alpinia galanga. Zhong xi yi jie he xue bao = Journal of Chinese integrative medicine. PMID 22015185 · doi:10.3736/jcim20111004
  Alpinia galanga rhizome extracts demonstrated anti-cancer, antioxidant, antibacterial, antiviral, cardiovascular protective, and digestive system protective effects.

1 further claim previously listed here could not be traced to a published paper and has been removed. An absence here means we could not identify the source, not that no work exists.

Recent safety updates

• Both sources of Rasna have long traditional safety records; Pluchea lanceolata is well-tolerated at standard doses with no significant toxicity in animal studies
• Alpinia galanga preparations may cause mild gastric irritation in sensitive individuals; ensure correct botanical identity to avoid substitution-related safety issues

Dosage forms and preparation

Dosage Forms: Churna (root/leaf powder), Kwatha (decoction - Rasnadi Kwatha, Maharasnadi Kwatha), Capsule, Tablet, Taila (medicated oil - Rasnadi Taila), Ghrita, Guggulu combination

Standard Dosage: 3-6 g powder daily; 20-30 mL decoction twice daily; 500 mg - 1 g standardized extract twice daily; Taila for external massage

Bioavailability: Pluchea lanceolata (Rasna) contains flavonoids and terpenoids with moderate oral bioavailability (20-35%). Quercetin and isorhamnetin glycosides are absorbed in the small intestine. Taraxasterol and other triterpenes have limited oral bioavailability (~10-20%) improved by lipid-based delivery. Topical Taila application provides effective local anti-inflammatory delivery for joint and muscle conditions.

Optimal Timing: Decoction: morning and evening between meals with warm water. Taila: warm oil massage before bath or at bedtime. Guggulu combination: after meals with warm water.

Standardized Extract: Rasna root extract (6:1) standardized to total flavonoids >4% (as quercetin), taraxasterol >0.5%. Maharasnadi Kwatha: standardized decoction with validated HPTLC multi-herb fingerprint.

Shelf Life: Dried root/leaf: 18-24 months; Powder: 18-24 months; Extract: 24 months; Taila: 24-36 months; Guggulu formulation: 24-36 months

Storage: Dried material: airtight containers, below 25 deg C, RH <55%, protected from pest infestation. Taila: amber glass, room temperature. Kwatha concentrate: refrigerated, use within 48 hours. Tablets: standard pharma storage below 25 deg C.

Marker Compounds: Quercetin, Isorhamnetin, Taraxasterol, Moretenol, Pluchein, Beta-sitosterol, Neolupenol, Stigmasterol

Extraction Methods

• Aqueous decoction (traditional Kwatha)
• Hydroalcoholic extraction (50-60% ethanol)
• Traditional Taila Paka (oil preparation with sesame oil base)
• Methanol extraction for flavonoid profiling
• Cold maceration in water for 12-24 hours

Synergistic Combinations

• Nirgundi (Maharasnadi Kwatha key combination for rheumatic pain)
• Dashmool (comprehensive Vata management)
• Guggulu (anti-inflammatory and analgesic - Rasnadi Guggulu)
• Eranda/Castor oil (Vata disorders and joint stiffness)
• Ashwagandha (musculoskeletal strength and recovery)
• Bala (nerve and muscle health)